High yield BNNTs synthesis by promotion effect of milling-assisted precursor

High yield BNNTs have been synthesised through milling-assisted method with a mixture of B and Li2O. The growth mechanism of BNNTs has been clarified to be a catalytic growth. X-ray photoelectron spectroscopy and X-ray diffraction pattern indicate the ultimate phase purity of the thin cylinder BNNTs. Comparison of TGA results demonstrate promotion effect of BNNTs synthesis by the milled mixture precursors.

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► This study improve the quality of cylindrical BNNTs by milling-assist precursor.
► Turbulent flow is designed to ensure the sufficient reaction during annealing.
► Metastable middle product describes the catalyst growth of BNNTs.
► Catalyst milling processing boosts nitriding as well as oxidation of B powder.
► TGA comparison presents promotion effect of milling-assisted method.